package com.bowen.cart.controller;

import com.bowen.cart.interceptor.CartInterceptor;
import com.bowen.cart.service.CartService;
import com.bowen.cart.vo.Cart;
import com.bowen.cart.vo.CartItem;
import com.bowen.cart.vo.UserInfoTo;
import com.bowen.common.constant.AuthServerConstant;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import java.util.List;
import java.util.concurrent.ExecutionException;

@Controller
public class CartController {

    @Autowired
    CartService cartService;

    @GetMapping("/currentUserCartItems")
    @ResponseBody
    public List<CartItem> getCurrentUserCartItems(){
        return cartService.getUserCartItems();
    }

    @GetMapping("/checkItem")
    public String checkItem(@RequestParam("skuId") Long skuId,@RequestParam("check") Integer check){
        cartService.checkItem(skuId,check);

        return "redirect:http://cart.bowen.com/cart.html";
    }

    @GetMapping("/countItem")
    public String countItem(@RequestParam("skuId") Long skuId,@RequestParam("num") Integer num){
        cartService.changeItemCount(skuId,num);

        return "redirect:http://cart.bowen.com/cart.html";
    }

    @GetMapping("/deleteItem")
    public String deleteItem(@RequestParam("deleteId") Long deleteId){
        cartService.deleteItem(deleteId);

        return "redirect:http://cart.bowen.com/cart.html";
    }

    /**
     * 浏览器有一个cookie：user-key ；标识用户身份，一个月后过期
     * 如果第一次使用jd的购物车功能，都会给一个临时的用户身份
     * 浏览器以后保存，每次访问都会带上这个cookie
     *
     *
     * 登录： session有
     * 没登录： 按照cookie里面带来的user-key来做。
     *
     * 第一次： 如果没有临时用户，帮忙创建一个临时用户
     * @return
     */
    @GetMapping("/cart.html")
    public String cartListPage(Model model) throws ExecutionException, InterruptedException {

        //1.快速得到用户信息 id，user-key
       Cart cart = cartService.getCart();
       model.addAttribute("cart",cart);
        return "cartList";
    }

    /**
     * RedirectAttributes ra
     *
     *      addFlashAttribute:将数据是放入session中，可以在页面取出，但是只能取一次
     *      addAttribute：将数据放在url后面
     * @param skuId
     * @param num
     * @param ra
     * @return
     * @throws ExecutionException
     * @throws InterruptedException
     */
    @GetMapping("/addTOCart")
    public String addTOCart(@RequestParam("skuId") Long skuId, @RequestParam("num")  Integer num
                            , RedirectAttributes ra) throws ExecutionException, InterruptedException {

        cartService.addToCart(skuId,num);

        ra.addAttribute("skuId",skuId);
        return "redirect:http://cart.bowen.com/addToCArtSuccessPage.html";
    }

    /**
     * 跳转到添加页
     * @param skuId
     * @param model
     * @return
     */
    @GetMapping("/addToCArtSuccessPage.html")
    public String addToCArtSuccessPage(@RequestParam("skuId") Long skuId, Model model){
        //重定向到成功页面。再次查询购物车数据即可
        CartItem item =  cartService.getCartItem(skuId);
        model.addAttribute("item",item);
        return "success";
    }
}
